New lanthanide sulfate–oxalate hybrid solids containing different inorganic building blocks

Three new lanthanide sulfate–oxalate hybrid solids, Er2(SO4)(C2O4)2(H2O)6·0.5H2O (1), Nd3(SO4)(C2O4)3.5(H2O)7·H2O (2), and [C4H14N2]0.5·Nd2(SO4)2(C2O4)1.5(H2O)4 (3), have been synthesized and structurally characterized. Compound 1 has a rare ladder-like structure, while compounds 2 and 3 have different three-dimensional structures. The presence of large 12-ring channels in the structure of 3 is noteworthy. The powder X-ray diffraction, IR spectra, thermogravimetric analyses, and magnetic susceptibility measurements of compounds 1 and 2 have also been investigated.